pic_mpcsoc.c revision 1.1.2.2
1 1.1.2.2 yamt /* $NetBSD: pic_mpcsoc.c,v 1.1.2.2 2009/08/19 18:46:41 yamt Exp $ */ 2 1.1.2.2 yamt 3 1.1.2.2 yamt /*- 4 1.1.2.2 yamt * Copyright (c) 2007 Michael Lorenz 5 1.1.2.2 yamt * All rights reserved. 6 1.1.2.2 yamt * 7 1.1.2.2 yamt * Redistribution and use in source and binary forms, with or without 8 1.1.2.2 yamt * modification, are permitted provided that the following conditions 9 1.1.2.2 yamt * are met: 10 1.1.2.2 yamt * 1. Redistributions of source code must retain the above copyright 11 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer. 12 1.1.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer in the 14 1.1.2.2 yamt * documentation and/or other materials provided with the distribution. 15 1.1.2.2 yamt * 16 1.1.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 1.1.2.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 1.1.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 1.1.2.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 1.1.2.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.1.2.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.1.2.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.1.2.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.1.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.1.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.1.2.2 yamt * POSSIBILITY OF SUCH DAMAGE. 27 1.1.2.2 yamt */ 28 1.1.2.2 yamt 29 1.1.2.2 yamt #include <sys/cdefs.h> 30 1.1.2.2 yamt __KERNEL_RCSID(0, "$NetBSD: pic_mpcsoc.c,v 1.1.2.2 2009/08/19 18:46:41 yamt Exp $"); 31 1.1.2.2 yamt 32 1.1.2.2 yamt #include <sys/param.h> 33 1.1.2.2 yamt #include <sys/malloc.h> 34 1.1.2.2 yamt #include <sys/kernel.h> 35 1.1.2.2 yamt 36 1.1.2.2 yamt #include <uvm/uvm_extern.h> 37 1.1.2.2 yamt 38 1.1.2.2 yamt #include <machine/pio.h> 39 1.1.2.2 yamt #include <powerpc/openpic.h> 40 1.1.2.2 yamt 41 1.1.2.2 yamt #include <arch/powerpc/pic/picvar.h> 42 1.1.2.2 yamt 43 1.1.2.2 yamt #include "opt_interrupt.h" 44 1.1.2.2 yamt 45 1.1.2.2 yamt static void mpcpic_enable_irq(struct pic_ops *, int, int); 46 1.1.2.2 yamt static void mpcpic_disable_irq(struct pic_ops *, int); 47 1.1.2.2 yamt static void mpcpic_establish_irq(struct pic_ops *, int, int, int); 48 1.1.2.2 yamt static void mpcpic_finish_setup(struct pic_ops *); 49 1.1.2.2 yamt 50 1.1.2.2 yamt static u_int steer8245[] = { 51 1.1.2.2 yamt 0x10200, /* external irq 0 direct/serial */ 52 1.1.2.2 yamt 0x10220, /* external irq 1 direct/serial */ 53 1.1.2.2 yamt 0x10240, /* external irq 2 direct/serial */ 54 1.1.2.2 yamt 0x10260, /* external irq 3 direct/serial */ 55 1.1.2.2 yamt 0x10280, /* external irq 4 direct/serial */ 56 1.1.2.2 yamt 0x102a0, /* external irq 5 serial mode */ 57 1.1.2.2 yamt 0x102c0, /* external irq 6 serial mode */ 58 1.1.2.2 yamt 0x102e0, /* external irq 7 serial mode */ 59 1.1.2.2 yamt 0x10300, /* external irq 8 serial mode */ 60 1.1.2.2 yamt 0x10320, /* external irq 9 serial mode */ 61 1.1.2.2 yamt 0x10340, /* external irq 10 serial mode */ 62 1.1.2.2 yamt 0x10360, /* external irq 11 serial mode */ 63 1.1.2.2 yamt 0x10380, /* external irq 12 serial mode */ 64 1.1.2.2 yamt 0x103a0, /* external irq 13 serial mode */ 65 1.1.2.2 yamt 0x103c0, /* external irq 14 serial mode */ 66 1.1.2.2 yamt 0x103e0, /* external irq 15 serial mode */ 67 1.1.2.2 yamt 0x11020, /* I2C */ 68 1.1.2.2 yamt 0x11040, /* DMA 0 */ 69 1.1.2.2 yamt 0x11060, /* DMA 1 */ 70 1.1.2.2 yamt 0x110c0, /* MU/I2O */ 71 1.1.2.2 yamt 0x01120, /* Timer 0 */ 72 1.1.2.2 yamt 0x01160, /* Timer 1 */ 73 1.1.2.2 yamt 0x011a0, /* Timer 2 */ 74 1.1.2.2 yamt 0x011e0, /* Timer 3 */ 75 1.1.2.2 yamt 0x11120, /* DUART 0, MPC8245 */ 76 1.1.2.2 yamt 0x11140, /* DUART 1, MPC8245 */ 77 1.1.2.2 yamt }; 78 1.1.2.2 yamt #define MPCPIC_IVEC(n) (steer8245[(n)]) 79 1.1.2.2 yamt #define MPCPIC_IDST(n) (steer8245[(n)] + 0x10) 80 1.1.2.2 yamt 81 1.1.2.2 yamt static int i8259iswired = 0; 82 1.1.2.2 yamt 83 1.1.2.2 yamt struct pic_ops * 84 1.1.2.2 yamt setup_mpcpic(void *addr) 85 1.1.2.2 yamt { 86 1.1.2.2 yamt struct openpic_ops *ops; 87 1.1.2.2 yamt struct pic_ops *self; 88 1.1.2.2 yamt int irq; 89 1.1.2.2 yamt u_int x; 90 1.1.2.2 yamt 91 1.1.2.2 yamt openpic_base = addr; 92 1.1.2.2 yamt ops = malloc(sizeof(struct openpic_ops), M_DEVBUF, M_NOWAIT); 93 1.1.2.2 yamt KASSERT(ops != NULL); 94 1.1.2.2 yamt self = &ops->pic; 95 1.1.2.2 yamt 96 1.1.2.2 yamt x = openpic_read(OPENPIC_FEATURE); 97 1.1.2.2 yamt if (((x & 0x07ff0000) >> 16) == 0) 98 1.1.2.2 yamt panic("setup_mpcpic() called on distributed openpic"); 99 1.1.2.2 yamt 100 1.1.2.2 yamt aprint_normal("OpenPIC Version 1.%d: " 101 1.1.2.2 yamt "Supports %d CPUs and %d interrupt sources.\n", 102 1.1.2.2 yamt x & 0xff, ((x & 0x1f00) >> 8) + 1, ((x & 0x07ff0000) >> 16) + 1); 103 1.1.2.2 yamt 104 1.1.2.2 yamt #ifdef PIC_I8259 105 1.1.2.2 yamt i8259iswired = 1; 106 1.1.2.2 yamt #endif 107 1.1.2.2 yamt self->pic_numintrs = ((x & 0x07ff0000) >> 16) + 1; 108 1.1.2.2 yamt self->pic_cookie = addr; 109 1.1.2.2 yamt self->pic_enable_irq = mpcpic_enable_irq; 110 1.1.2.2 yamt self->pic_reenable_irq = mpcpic_enable_irq; 111 1.1.2.2 yamt self->pic_disable_irq = mpcpic_disable_irq; 112 1.1.2.2 yamt self->pic_get_irq = opic_get_irq; 113 1.1.2.2 yamt self->pic_ack_irq = opic_ack_irq; 114 1.1.2.2 yamt self->pic_establish_irq = mpcpic_establish_irq; 115 1.1.2.2 yamt self->pic_finish_setup = mpcpic_finish_setup; 116 1.1.2.2 yamt ops->isu = NULL; 117 1.1.2.2 yamt ops->nrofisus = 0; /* internal only */ 118 1.1.2.2 yamt ops->flags = 0; /* no flags (yet) */ 119 1.1.2.2 yamt ops->irq_per = NULL; /* internal ISU only */ 120 1.1.2.2 yamt strcpy(self->pic_name, "mpcpic"); 121 1.1.2.2 yamt pic_add(self); 122 1.1.2.2 yamt 123 1.1.2.2 yamt openpic_set_priority(0, 15); 124 1.1.2.2 yamt for (irq = 0; irq < self->pic_numintrs; irq++) { 125 1.1.2.2 yamt /* make sure to keep disabled */ 126 1.1.2.2 yamt openpic_write(MPCPIC_IVEC(irq), OPENPIC_IMASK); 127 1.1.2.2 yamt /* send all interrupts to CPU 0 */ 128 1.1.2.2 yamt openpic_write(MPCPIC_IDST(irq), 1 << 0); 129 1.1.2.2 yamt } 130 1.1.2.2 yamt openpic_write(OPENPIC_SPURIOUS_VECTOR, 0xff); 131 1.1.2.2 yamt openpic_set_priority(0, 0); 132 1.1.2.2 yamt 133 1.1.2.2 yamt /* clear all pending interrunts */ 134 1.1.2.2 yamt for (irq = 0; irq < self->pic_numintrs; irq++) { 135 1.1.2.2 yamt openpic_read_irq(0); 136 1.1.2.2 yamt openpic_eoi(0); 137 1.1.2.2 yamt } 138 1.1.2.2 yamt 139 1.1.2.2 yamt #if 0 140 1.1.2.2 yamt printf("timebase freq=%d\n", openpic_read(0x10f0)); 141 1.1.2.2 yamt #endif 142 1.1.2.2 yamt return self; 143 1.1.2.2 yamt } 144 1.1.2.2 yamt 145 1.1.2.2 yamt void 146 1.1.2.2 yamt mpcpic_reserv16() 147 1.1.2.2 yamt { 148 1.1.2.2 yamt extern int max_base; /* intr.c */ 149 1.1.2.2 yamt 150 1.1.2.2 yamt /* 151 1.1.2.2 yamt * reserve 16 irq slot for the case when no i8259 exists to use. 152 1.1.2.2 yamt */ 153 1.1.2.2 yamt max_base += 16; 154 1.1.2.2 yamt } 155 1.1.2.2 yamt 156 1.1.2.2 yamt static void 157 1.1.2.2 yamt mpcpic_establish_irq(struct pic_ops *pic, int irq, int type, int pri) 158 1.1.2.2 yamt { 159 1.1.2.2 yamt int realpri = max(1, min(15, pri)); 160 1.1.2.2 yamt u_int x; 161 1.1.2.2 yamt 162 1.1.2.2 yamt x = irq; 163 1.1.2.2 yamt x |= OPENPIC_IMASK; 164 1.1.2.2 yamt x |= (i8259iswired && irq == 0) ? 165 1.1.2.2 yamt OPENPIC_POLARITY_POSITIVE : OPENPIC_POLARITY_NEGATIVE; 166 1.1.2.2 yamt x |= (type == IST_EDGE) ? OPENPIC_SENSE_EDGE : OPENPIC_SENSE_LEVEL; 167 1.1.2.2 yamt x |= realpri << OPENPIC_PRIORITY_SHIFT; 168 1.1.2.2 yamt openpic_write(MPCPIC_IVEC(irq), x); 169 1.1.2.2 yamt 170 1.1.2.2 yamt aprint_debug("%s: setting IRQ %d to priority %d\n", __func__, irq, 171 1.1.2.2 yamt realpri); 172 1.1.2.2 yamt } 173 1.1.2.2 yamt 174 1.1.2.2 yamt static void 175 1.1.2.2 yamt mpcpic_enable_irq(struct pic_ops *pic, int irq, int type) 176 1.1.2.2 yamt { 177 1.1.2.2 yamt u_int x; 178 1.1.2.2 yamt 179 1.1.2.2 yamt x = openpic_read(MPCPIC_IVEC(irq)); 180 1.1.2.2 yamt x &= ~OPENPIC_IMASK; 181 1.1.2.2 yamt openpic_write(MPCPIC_IVEC(irq), x); 182 1.1.2.2 yamt } 183 1.1.2.2 yamt 184 1.1.2.2 yamt static void 185 1.1.2.2 yamt mpcpic_disable_irq(struct pic_ops *pic, int irq) 186 1.1.2.2 yamt { 187 1.1.2.2 yamt u_int x; 188 1.1.2.2 yamt 189 1.1.2.2 yamt x = openpic_read(MPCPIC_IVEC(irq)); 190 1.1.2.2 yamt x |= OPENPIC_IMASK; 191 1.1.2.2 yamt openpic_write(MPCPIC_IVEC(irq), x); 192 1.1.2.2 yamt } 193 1.1.2.2 yamt 194 1.1.2.2 yamt static void 195 1.1.2.2 yamt mpcpic_finish_setup(struct pic_ops *pic) 196 1.1.2.2 yamt { 197 1.1.2.2 yamt uint32_t cpumask = 1; 198 1.1.2.2 yamt int i; 199 1.1.2.2 yamt 200 1.1.2.2 yamt for (i = 0; i < pic->pic_numintrs; i++) { 201 1.1.2.2 yamt /* send all interrupts to all active CPUs */ 202 1.1.2.2 yamt openpic_write(MPCPIC_IDST(i), cpumask); 203 1.1.2.2 yamt } 204 1.1.2.2 yamt } 205
Indexes created Sat Nov 01 05:10:12 GMT 2025